A143705 (1, 2, 3, 2^2, 5, 2*3, 7, 2^3, 3^2, 2*5, 11, 2^2*3, 13, 2*7, 3*5,..) becomes ((1+2)^3, (2+2)^5, (2+3)^7, (2+3)^3, (2+2)^5, (11+2)^2, (3+13)^2, (7+3)^5,..).

27, 1024, 78125, 125, 1024, 169, 256, 100000, 16926659444736, 25, 441, 2097152, 41753905413413116367045797, 125, 49, 4096, 16384, 29791, 1296, 8589934592, 2476099, 81, 72759576141834259033203125, 9261, 3375

Offset

1,1

Links

Table of n, a(n) for n=1..25.

Example

a(8)=(7+3)^5=10^5=100000.
a(9)=(2+4)^17=6^17=16926659444736..
a(10)=(2+3)^2=5^2=25.
a(11)=(19+2)^2=21^2=441.
a(12)=(5+3)^7=8^7=2097152,
etc.

Crossrefs

Cf. A141287, A141261, A136735.

Sequence in context: A239571 A017019 A143366 * A222440 A159457 A290946

Adjacent sequences: A143702 A143703 A143704 * A143706 A143707 A143708

Keyword

nonn

Author

Juri-Stepan Gerasimov, Nov 13 2008

Extensions

Corrected (161051 removed) and extended by R. J. Mathar, Apr 18 2010

Status

approved